APSS 2013 Proceedings - The University of Sydney

More documents

Recommendations

Info

Aust. Poult. Sci. Symp. 2013.....24 increased breast meat yield (P < 0.05), followed by a further numerical increase with the additional adjustment for SID. Table 3 - Effects of experimental diets on performance of broilers (10-28 days) Parameters Experimental diets Good HD HD-total AA HD-SID AA Final body weight, g 1479 bc 1285 a 1446 b 1516 c Body weight gain, g/d 58.0 bc 48.8 a 56.5 b 59.8 c Feed intake, g/d 94 b 89 a 98 bc 99 c Feed conversion ratio, g/g 1.62 a 1.82 c 1.73 b 1.65 a Dressing, % of live weight 61.2 ab 60.4 b 60.6 ab 61.7 a Breastmeat, % of carcass weight 32.7 a 30.4 b 32.3 a 32.7 a a, b, c Means having common superscripts in a column do not vary significantly (P < 0.05) The results from this study indicate that only adjusting the nutritional matrix of heat damaged RSM for total amino acid content does not completely correct bird performance when compared to bird performance using good quality ingredients. Growth performance and carcass yield of broilers fed HD RSM diets corrected for SID amino acid composition was improved and similar to that of birds fed good RSM diets. In conclusion, the impact of heat damaged RSM can be mitigated by accounting for differences in the SID amino acid content. REFERENCES Boucher SE, Calsamiglia S, Parsons CM, Stein HH, Stern MD, Erickson PS, Utterback PL, Schwab CG (2009b) Journal of Dairy Science 92, 4489-4298. Boucher SE, Calsamiglia S, Parsons CM, Stein HH, Stern MD, Erickson PS, Utterback PL, Schwab CG (2009b) Journal of Dairy Science 92, 6056-6067 Cho M (2011) M.Sc.Thesis submitted to the University of Saskatchewan. Evonik (2012). Facts and figures no. 1599. http://feed-additives.evonik.com/product/feedadditives/en/services/technical-literature/pages/default.aspx. Fontaine J, Zimmer U, Moughan PJ, Rutherford SM (2007) Journal of Agricultural and Food Chemistry 55, 10737-10743. Forbes JM (2005) Australian Poultry Science Symposium 17, 145-152. Kluth H, Lemme A, Redshaw MS, Rodehutscord M (2010) Proceedings of the XIIIth European Poultry Conference. Larsen PO (1981) Secondary Plant Products, Vol 7, pp 501-526, Academic Press, NY. Lemme A (2006) AMINONews ® 7 (2), 11-18. Mauron J (1981) Progress in Food and Nutrition Science 5, 5–35. Newkirk RW, Classen HL (2002) Poultry Science 81:815-825. Newkirk RW, Classen HL, Edney MJ (2003) Animal Feed Science and Technology 104, 111- 119. Parsons CM, Hashimoto K, Kedekind KJ, Han Y, Baker DH (1992) Poultry Science 71,133– 140. 166
Aust. Poult. Sci. Symp. 2013.....24 RELATIONSHIP BETWEEN SHANK, KEEL LENGTH AND FERTILITY IN MEAT- TYPE JAPANESE QUAIL U. FAROOQ 1,2 , I.A. MALECKI 1,2 and J. GREEFF 3 Summary A study was undertaken to assess the relationship between growth and skeletal traits and reproductive performance traits in commercial Japanese quail strains. Two hundred and twenty five, 8 week old Japanese quail, representing five strains, were housed in cages and pair-mated to determine the relationship between morphometric and reproduction traits. Shank and keel length and live weight were recorded in males and females. Cloacal gland area, ejaculate volume, and sperm concentration were also recorded in males. Strains that had shorter keel length, both for males and females, had higher supply of sperm compared to strains with longer keel length (P < 0.05). Keel length in females was positively correlated with live weight (r = 0.394; P < 0.01), but negatively correlated (r = -0.383; P < 0.01) with sperm supply. Keel length in males was positively correlated with ejaculate volume (r = 0.226; P < 0.05) and sperm concentration in an ejaculate (r = 0.291; P < 0.01), but negatively correlated (r = -0.355; P < 0.01) with the cloacal gland area. This study suggests the desirability of monitoring morphometric traits in Japanese quail to avoid undesirable correlated changes in reproductive performance traits. I. INTRODUCTION Skeletal development is an important factor in the attainment of optimum live weight and uniformity for meat type poultry. A number of conformational traits are known to be good indicators of body growth (Edward, 2000). In general, shank and keel length are positively correlated with live weight. Selection for longer keel and shank length is regarded as desirable because a longer keel allows more space for breast muscle deposition (Wolanski et al., 2004), while increased shank length and width help dissipation of heat and are positively correlated with mating success (Mahrous and Radwan, 2011). Changes in skeletal conformation and leg dimensions may, however, impede semen transfer (Soller et al., 1965). Japanese quail occupy an important position in commercial poultry production because of their desirable meat and egg characteristics. Over the last three to four decades quail have been selected in commercial breeding programs for increased growth rate and meat yield. Consequently, the mature weight of current commercial quails is considerably greater than that of 40 years ago. Similarly to meat chickens, changes in body weight and frame size, shank and keel length may possibly be linked with reproductive ability of breeding flocks (McGary et al., 2003; El-Sahn, 2007; Galal et al., 2002). Keeping in mind this phenomenon, this study investigated the relationship between body weight, shank and keel length, and male and female reproductive traits in Japanese quail. We used sperm supply to eggs (the number of sperm present in the outer perivitelline layer and holes made by sperm in the inner perivitelline layer of the ovum) as a measure of reproductive performance of quail (Wishart and Staines, 1995; Farooq et al., 2012). 1 School of Animal Biology M092, Faculty of Natural and Agricultural Sciences, University of Western Australia, Crawley, WA 6009, Australia. 2 UWA Institute of Agriculture, The University of Western Australia, 35, Stirling Highway, Crawley, WA 6009, Australia. 3 Department of Agriculture and Food Western Australia, South Perth, WA 6151, Australia. 167
Page 1 and 2:
24 th ANNUAL AUSTRALIAN POULTRY SCI
Page 3 and 4:
AUSTRALIAN POULTRY SCIENCE SYMPOSIU
Page 5:
AUSTRALIAN POULTRY AWARD The Austra
Page 9 and 10:
CONTENTS THE IMPORTANCE OF THE POUL
Page 11 and 12:
SHORT COMMUNICATION SESSION # 1: (c
Page 13 and 14:
SHORT COMMUNICATION SESSTION # 2: (
Page 15:
HOT TOPIC 2: EMERGING DISEASES AND
Page 18 and 19:
Aust. Poult. Sci. Symp. 2013.....24
Page 20 and 21:
Page 22 and 23:
Page 24 and 25:
Page 26 and 27:
Page 28 and 29:
Page 30 and 31:
Page 32 and 33:
Page 34 and 35:
Page 36 and 37:
Page 38 and 39:
Page 40 and 41:
Page 42 and 43:
Page 44 and 45:
Page 46 and 47:
Page 48 and 49:
Page 50 and 51:
Page 52 and 53:
Page 54 and 55:
Page 56 and 57:
Page 58 and 59:
Page 60 and 61:
Page 62 and 63:
Page 64 and 65:
Page 66 and 67:
Page 68 and 69:
Page 70 and 71:
Page 72 and 73:
Page 74 and 75:
Page 76 and 77:
Page 78 and 79:
Page 80 and 81:
Page 82 and 83:
Page 84 and 85:
Page 86 and 87:
Page 88 and 89:
Page 90 and 91:
Page 92 and 93:
Page 94 and 95:
Page 96 and 97:
Page 98 and 99:
Page 100 and 101:
Page 102 and 103:
Page 104 and 105:
Page 106 and 107:
Page 108 and 109:
Page 110 and 111:
Page 112 and 113:
Page 114 and 115:
Page 116 and 117:
Page 118 and 119:
Page 120 and 121:
Page 122 and 123:
Page 124 and 125:
Page 126 and 127:
Page 128 and 129:
Page 130 and 131:
Page 132 and 133: Aust. Poult. Sci. Symp. 2013.....24
Page 148 and 149: INTERACTIVE EFFECTS OF EXOGENOUS EN
Page 150 and 151: microbiota to favor an increased ac
Page 232 and 233:
Page 234 and 235:
Page 236 and 237:
Page 238 and 239:
Page 240 and 241:
Page 242 and 243:
Page 244 and 245:
Page 246 and 247:
Page 248 and 249:
Page 250 and 251:
Page 252 and 253:
Page 254 and 255:
Page 256 and 257:
Page 258 and 259:
Page 260 and 261:
Page 262 and 263:
Page 264 and 265:
Page 266 and 267:
Page 268 and 269:
Page 270 and 271:
Page 272 and 273:
Page 274 and 275:
Page 276 and 277:
Page 278 and 279:
Page 280 and 281:
Page 282 and 283:
Page 284 and 285:
Page 286 and 287:
Page 289 and 290:
AUTHOR INDEX Name Page(s) Email Add
Page 291 and 292:
Klein-Hessling, H 207 hkleinhesslin
Page 293:
Van de Wouw, A 247 nnet.vandewouw@w
show all

APSS 2013 Proceedings - The University of Sydney

Create successful ePaper yourself

Delete template?

Save as template?