Data extracted from the analysis of herd records were entered in Excel. The descriptive statistical analysis of the age at first calving (calculation of frequencies, means, standard deviations, minimum and maximum) was made with the XLSTAT software (6.1.9 release). These parameters were analyzed by ANOVA and the results were compared using the Newman-Keuls test. Differences were considered significant for p < 0.05.
To ideal understand the effectation of the fresh new crossbreeding towards intimate precocity from crossbreed animals, the newest AFC try examined according to: crossbreed kind of, race regarding sire parents (bull and inseminated regional cows), hybridization height and you will inventory facilities
The newest suggest many years at first calving for everyone breeds come up with is actually ± weeks, symbolizing around three-years (2 years eleven months 19 months ± 11 weeks twenty four hours). By far the most precocious heifers calved in this 2 yrs ( months). For fifty% off heifers, earliest calving is at months. The initial features happened an average of on ± months ( to months).
Brand new indicate AFC of the crossbreeds is below those claimed among Zebu in tropics from the more forty weeks reported in several education ( Rahman et al., 2016 ; Tellah mais aussi al., 2015a , 2015b ; Bashir and Este Zubeir, 2013 ; Sokouri et al., 2010 ; Bayemi et al., 2005 ). , 2015 ). Specific people features said show very alongside all of our observance to your other crossbreeds when you look at the Africa, regardless of cow breeds found in the new experiment: 34 days one of the Montbeliard crossbreeds inside Algeria ( Madani and you will Mouffok, 2008 ) and you will Morocco ( Srairi and Mousili, 2014 ), ± 0.43 weeks in the Girolando crossbreed in Benin ( Doko et al., 2012 ). It absolutely was an identical toward Holstein-Friesian hybrid cattle into the Ethiopia from the 36.4 ± step one.seven days, the latest Borgou and you can Lagunaire breeds at thirty-six.step 1 ± 6.30 months within the Benin ( Adamou-Ndiaye et al., 2003 ) plus in the new Azawak Zebu at 36.5 ± cuatro.10 and you can ± 13 weeks for the Niger ( Achard and you can Chanono, 2006 , 1997 ).
Our very own observance try greater than those individuals reported by Genzebu mais aussi al. (2016) one of hybrid cattle within the Kenya (twenty-six.9 ± 5.4 and you can 27.0 ± 3.seven weeks). It absolutely was somewhat better than brand new observations of the Ngodigha ainsi que al. (2009) out of 30.eight ± dos.5 days certainly one of crossbreeds (Holstein x Bunadji) during the Nigeria, Ben Salem mais aussi al. (2009) regarding 30.7 ± 4.12 months for the Holstein in the Tunisia and you can Srairi and you can Mousili (2014) from 31 days for the Montbeliard inside the Morocco. Specific variation points of the AFC were examined to achieve the comments.
Among some other crossbreeding items identified ( Table step one ), this new Fulani Zebu (FZ) inseminated with semen away from Montbeliard (MB x FZ) and Alps Brownish (Abdominal x FZ) provides put the quintessential precocious corssbreeds (basic calving at couple of years) (5%). When you’re, new inseminations from Fulani Zebu cows into the semen off Holstein (HT x FZ) and you can out of Tarentaise (T x FZ) then insemination from Gudali Zebu cows that have sperm of Montbeliard (MB x GZ) have delivered the latest precocious crossbreed cattle.
Minimal try months and also the restrict are days
Desk step one: Decades at first calving (months) according to crossbreeding input milk products cows facilities in your community away from Bobo-Dioulasso during the Burkina Faso
The analysis concerned about the envie site de rencontre mjvb brand new reproduction track of twenty (20) hybrid cows as a consequence of new interbreeding through the artificial insemination between regional reproduce cattle (Gudali Zebu and Fulani Zebu) and exotic breed bulls (Holstein, Alps Brown, Tarentaise, Montbeliard). This type of crossbreeds was indeed born ranging from 1999 and you may 2010 and provided its very first calf between 2002 and you may 2012 toward about three improved stock farms for the metropolitan and you may residential district areas of Bobo-Dioulasso. Every one of these farms provides on fifty crossbreed cows when you look at the manufacturing. The original farm is situated in an urban area, next 10 Kilometer away on southern area log off and the third 60 Kilometres aside from the east get-off off Bobo-Dioulasso. First studies between during these elements aided to select this type of about three facilities that have a livestock check in (temperatures and you can fake insemination monitoring sheet sets). Occurrences related to private monitoring of animal reproduction such calving schedules, dates of earliest warms and you may inseminations have been submitted everyday from the the fresh cattlemen and the inseminators. The fresh exploitation of those data files made it you’ll to choose twenty (20) very first calving’s corresponding to the original attributes. Such farms are described as the current presence of shed, an effective herd fitness monitoring, a led reproduction mode (mostly AI, getting decreased a designated bull), the latest concentrate provides (cotton pie otherwise cottonseed and commercial malt) on ration eating and you may rigorous delivery away from silage and you may farming by the points. The actual only real function of this process particular is the production and you will business away from by hand canned dairy, two times a day (early morning and you will evening). The fresh concentrates was offered on the dogs on the return away from grazing plus brand new day within milking day.