饲喂喷雾干燥血浆的母猪的泌乳期采食量消失情况及断奶至发情间隔时间。

Lactation feed disappearance and weaning to estrus interval for sows fed spray-dried plasma.

作者信息

Crenshaw J D, Boyd R D, Campbell J M, Russell L E, Moser R L, Wilson M E

机构信息

APC Inc., Ankeny, IA 50021, USA.

出版信息

J Anim Sci. 2007 Dec;85(12):3442-53. doi: 10.2527/jas.2007-0220. Epub 2007 Sep 4.

DOI:10.2527/jas.2007-0220

PMID:17785594

Abstract

Four experiments involving 265, 410, 894, and 554 sows (Exp. 1 to 4, respectively) were conducted to determine the effect of spray-dried plasma (SDP) at 0 or 0.25% (Exp. 1 and 2) and 0 or 0.50% (Exp. 3 and 4) in lactation diets on average daily feed disappearance (FD), sum of sow BW, fetal and placental loss from d 110 gestation to weaning (SWL), litter size at weaning, litter weight at weaning, and average days from weaning to first estrus (WEI). Experiments 1, 3, and 4 were conducted during summer months, and Exp. 2 was conducted during fall to winter months. Experiment 1 used only parity 1 and parity 2 sows and Exp. 4 used only mature (>2 parities) sows, whereas Exp. 2 and 3 used all parity groups. Sows fed SDP in Exp. 1 had increased (P < 0.01) FD and a tendency for reduced (P = 0.06) SWL and WEI (P = 0.06). Sows fed SDP in Exp. 2 had a tendency for increased (P = 0.09) sow BW at weaning and reduced (P = 0.09) SWL, whereas other variables were not different between diets. Parity 1 and 2 sows fed SDP in Exp. 3 had increased (P < 0.01) FD, but mature sows fed SDP had reduced (P = 0.02) FD. Pig survival and litter size at weaning for all parity groups was not different between diets. The WEI for parity 1 sows fed SDP was reduced (P = 0.02) and tended to be reduced (P = 0.10) for mature sows fed SDP, but was not different between diets for parity 2 sows. More parity 1 sows fed SDP were detected (P = 0.01) in estrus 4 to 6 d after weaning, and fewer were detected (P < 0.01) in estrus 6 d after weaning compared with control parity 1 sows. In Exp. 4, FD was reduced (P < 0.01) for mature sows fed SDP; however, litter weight and average pig BW at weaning was increased (P < 0.01) with more (P < 0.01) marketable pigs (pig BW > 3.6 kg) weaned per litter. Relatively low dietary levels of SDP (0.25 to 0.50%) fed to parity 1 sows farrowed during summer months increased lactation FD and reduced WEI. Mature sows fed SDP during summer months consumed less lactation feed without compromising WEI, but had an increased litter weight, average pig BW, and number of marketable pigs at weaning.

摘要

进行了四项试验（试验1至4分别涉及265头、410头、894头和554头母猪），以确定泌乳日粮中添加0%或0.25%（试验1和2）以及0%或0.50%（试验3和4）的喷雾干燥血浆（SDP）对平均日采食量（FD）、母猪体重、从妊娠110天到断奶的胎儿和胎盘损失总和（SWL）、断奶时的窝仔数、断奶时的窝仔重以及从断奶到首次发情的平均天数（WEI）的影响。试验1、3和4在夏季进行，试验2在秋冬季节进行。试验1仅使用头胎和二胎母猪，试验4仅使用经产（>2胎）母猪，而试验2和3使用所有胎次的母猪。试验1中饲喂SDP的母猪FD增加（P<0.01），SWL和WEI有降低趋势（P=0.06）。试验2中饲喂SDP的母猪断奶时体重有增加趋势（P=0.09），SWL降低（P=0.09），而其他变量在不同日粮间无差异。试验3中，头胎和二胎饲喂SDP的母猪FD增加（P<0.01），但经产母猪饲喂SDP后FD降低（P=0.02）。所有胎次组的仔猪成活率和断奶时窝仔数在不同日粮间无差异。试验3中，头胎饲喂SDP的母猪WEI降低（P=0.02），经产母猪饲喂SDP后WEI有降低趋势（P=0.10），但二胎母猪不同日粮间无差异。与对照头胎母猪相比，更多饲喂SDP的头胎母猪在断奶后4至6天发情被检测到（P=0.01），而在断奶后6天发情被检测到的较少（P<0.01）。试验4中，经产母猪饲喂SDP后FD降低（P<0.01）；然而，断奶时窝仔重和仔猪平均体重增加（P<0.01），每窝断奶时可上市仔猪更多（P<0.01）（仔猪体重>3.6 kg）。夏季产仔的头胎母猪饲喂相对低水平日粮（0.25%至0.50%）的SDP可增加泌乳期FD并降低WEI。夏季经产母猪饲喂SDP可减少泌乳期采食量且不影响WEI，但断奶时窝仔重、仔猪平均体重和可上市仔猪数量增加。