Development of the Conceptus in the Bovine

Eley, Robert; Thatcher, W.W.; Bazer, Fuller W.; Wilcox, C.J.; Becker, R. B.; Head, H. H.; Adkinson, R.W.

doi:10.3168/jds.s0022-0302(78)83622-4

Cited by 102 publications

(52 citation statements)

References 9 publications

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“…The results of the ante-mortem inspection, carried out by the official veterinarian service at the abattoir, were also recorded. Age of fetuses harvested from pregnant cows was estimated from concepti morphology and morphometry (Eley et al, 1978).…”

Section: Measurements and Sample Collectionmentioning

confidence: 99%

Quality and Safety of Beef Produced in Central African Sub-Region

Nfor

Corazzin

Fonteh

et al. 2014

Italian Journal of Animal Science

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Aim of this research is to provide a general situation of cattle slaughtered in Cameroon, as a representative example for the Central African Sub-region. The quality and safety of beef from the abattoir of Yaoundé, the largest in Cameroon, were considered. From January 2009 to March 2012, the pre-slaughter conditions and characteristics of 1953 cattle carcasses were recorded, as well as the pH of m. longissimus thoracis 24 h after slaughter. From these carcasses, 60 were selected to represent the bulls slaughtered. The quality parameters and composition of m. longissimus thoracis were carried out. The origin of most of the cattle was the Guinea High Savannah (74.6%), and transhumance was the common production system (75.5%). Gudali (45.6%), White Fulani (33.3%) and Red Mbororo (20.3%) breeds were predominant. Carcass weight was affected by rearing system and cattle category, and it markedly varied during year. Considering meat quality, the fat content was low (1.2%) and similar between breeds, moreover Gudali showed the toughest meat. Of the cows slaughtered, 27% were pregnant and the most common abnormal conditions encountered were ectoparasites, fatigue, lameness, fungal-like skin lesions, enlarged lymph nodes, respiratory distress, nodular lesions. More than 20% of the carcasses had some organs condemned, mainly for liver flukes (5.17%), and 1.0% of them were completely condemned due to tuberculosis, that also affected 3.28% of lungs. These data could aid authorities draw up programmes with the aim to strengthen cattle production, improve beef supply, control and prevent the observed diseases, and promote the regional trade.

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Section: Measurements and Sample Collectionmentioning

confidence: 99%

Quality and Safety of Beef Produced in Central African Sub-Region

Nfor

Corazzin

Fonteh

et al. 2014

Italian Journal of Animal Science

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“…Zmieniały się one sezonowo w zależności od fenologii i warunków śniegowych (Ryc. 4,5). Okres trwania ujemnego bilansu energii w ciągu zimy wynosił 131 dni.…”

Section: C Gates I R J Hudson Wahania Ciężaru Cervus Elaphus Neunclassified

“…Weights of pregnant cows were adjusted for weight of the gravid uterus using data reported for singly-conceived cattle (Eley et al, 1978), domestic sheep (Rattray et al, 1974) and white-tailed deer (Robbins & Moen, 1975). For these species the weigth of the fetus at term represents an average of 57%> of the weight of the total gravid uterus.…”

Section: Weight Measurementmentioning

confidence: 99%

Weight dynamics of wapiti in the boreal forest

Frylestam¹

1981

Acta Theriol.

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“…Another study on gross examination of bovine fetuses indicated that fetal weight increased significantly over membrane weight just before 100 days of gestation 26 , as shown in Figure 5. However, the placentomes may be less capable of maintaining the aggressive growth of the fetus during the late pregnancy period, which may result in slower fetal growth rate 25 .…”

Section: Relationship Between Development Of Placenta and Fetusmentioning

confidence: 95%

Studies of fetal-placental development in Australian and Indonesian breeds of tropically adapted cattle

Dikman¹

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Fetal and placental development has been most comprehensively described in the Holstein-Friesian (HF) breed. However, there is a lack of published data on fetal and placental development in tropically adapted genotypes. The major objectives were to define fetal and placental development during approximately the first half of gestation in Droughtmaster (DM) cattle (the most numerous breed of tropically adapted beef cattle in Australia), and in the three most common breeds of Indonesian beef cattle (Bali, Ongole and Madura). Previous studies of the HF breed during the first gestational age was possible to measure fetal and placental development as reported by Ginther (1998). The major hypothesis investigated was that fetal and placental development during the first approximately 140 days of gestation is similar among these four breeds of cattle, and is similar to that reported for the HF breed.Two ultrasonographic studies of fetal and placental development were conducted. The first study was conducted at The University of Queensland Pinjarra Hills Farm, Brisbane, Australia and involved twenty approximately 2-year old cycling DM heifers (mean liveweight+SD; 430 + 27.35 kg). All heifers underwent treatment to synchronise ovulation followed by fixed-time AI and then AI to observed oestrus. The second study was conducted at the Beef Cattle Research Station, Grati-Pasuruan, East Java Indonesia.Ongole (n=20; mean liveweight+SD; 239 ± 37.04 kg), Bali (n=20; mean liveweight+SD; 179 ± 10.68 kg) and Madura cows/heifers (n=20; mean liveweight+SD; 193 ± 27.34 kg) were treated to synchronise oestrus, and then each group of females was mated to a single bull of the same breed. In each study, all females underwent transrectal ultrasonography of the reproductive tract commencing 4 weeks after AI/mating and then once a week until approximately day 140 of gestation. Depending on stage of development the following measurements were made; crown-rump length (CRL; mm), head length (HL; mm), trunk diameter (TD; mm), placentome diameter (PD; mm), hoof diameter (HD; mm) and eye diameter (ED; mm). Measures of fetal development {trunk diameter (TD) and eye diameter (ED), head length (HL)} in HF cattle were derived using a modification of published equations. Fetal and placental morphometric variables were initially summarised using means and standard deviations. Student's t-test was then used to compare the equality of the mean between morphometric variables reported for each breed of cattle examined and those derived from published equations of development for the HF breed.iii | P a g e To compare fetal and placental development in the breeds of cattle studied for each of the morphometric variables, a separate linear mixed effects model was fitted with heifers/cows as a random effect and a first order autoregressive function for the residuals.Morphometric data on fetal and placental data was derived from examination of 12 DM heifers and 5 Ongole cows, 5 Bali heifers and 15 Madura heifers. Between weeks 5 and 12 HL and HD of DM fetu...

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Development of the Conceptus in the Bovine

Cited by 102 publications

References 9 publications

Quality and Safety of Beef Produced in Central African Sub-Region

Quality and Safety of Beef Produced in Central African Sub-Region

Weight dynamics of wapiti in the boreal forest

Studies of fetal-placental development in Australian and Indonesian breeds of tropically adapted cattle

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