Conception rate did not differ between age groups but was affected by interval to insemination (P=0.07; χ2= 7.2; df = 3) in YH. Conception rates in YH were 52.9 and 31.5% at 48 to 72h and 96 to 120 h, respectively (P<0.01;χ2= 7.4; df = 1). Within age group, mean BW of...
Hagiya K, Terawaki Y, Yamazaki T, Nagamine Y, Itoh F, Yamaguchi S, Abe H, Gotoh Y, Kawahara T, Masuda Y and Suzuki M 2013. Relationships between conception rate in Holstein heifers and cows and milk yield at various stages of lactation. Animal 7, 1423-1428....
Bhosrekar, M RPhadnis, Y PMangurkar, B RBhosrekar, M. R., V .P. Phadnis and B. R. Mangurkar (1995) : Oestrus behaviour and conception rate in oestrus synchronized cattle and buffalo heifers. Indian j. anim. Sci. 65 : 732-735....
RegisterLog in Sign up with one click: Facebook Twitter Google Share on Facebook (redirected fromheifers) Dictionary Thesaurus Encyclopedia Related to heifers:replacement heifers,steers HEIFER. A young cow, which has not had a calf. A beast of this kind two years and a half old, was held...
4. Association among genomic breeding values for daughter pregnancy rate and heifer conception rate and estrous characteristics and fertility of Holstein heifers [C] . Annual Conference of the American Association of Bovine Practitioners . 2017 机译:基因组育种价值与荷斯坦小母牛的孕育率和小母牛概念...
Conception rate was low and delayed in the lightest heifers (<181 kg at the start of joining), but Angus (A) heifers of this weight were more likely to conceive than were Angus x Friesian (AX F) or A x (A x F) heifers. Also, at a given liveweight younger heifers were less ...
an important process impeding estrous cycle transition [112]. Transforming growth factor beta 1 induced transcript (TGFB1I1) was down-regulated in the LF animals, suggesting altered or irregular endometrial remodelling in these animals which may be contributing to the conception rate differences observe...
Consumption of E+ leads to fescue toxicosis, which is characterized by reduced feed intake and ADG, elevated body temperature, increased respiration rate, and poor conception rates [3–6]. Health issues associated with E+ are estimated to cost livestock producers over $1 billion annually [7...
In US Holsteins the conception rate peaked at 57% at 15 to 16 months, declining in older heifers. Wide variations in growth rates on the same farm often lead to some animals having delayed first breeding and/or conception. Oestrous synchronisation regimes and sexed semen can both be used ...
Risk factors limiting first service conception rate in dairy cows and their economic impact There were several men looking for bulling heifers and those Limousin crosses and British Blue heifers if they fitted the bill were anything from PS1,100 up to PS1,450 and every sale we seem to have ...