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.
This new imply decades in the beginning calving for everybody breeds put together try ± months, representing approximately 36 months (two years eleven days 19 days ± eleven weeks 24 hours). The minimum is months and the restrict is actually weeks. The quintessential precocious heifers calved within couple of years ( months). Getting fifty% away from heifers, basic calving was at days. The initial qualities were held normally in the ± weeks ( to help you months).
The fresh mean AFC of your crossbreeds is below men and women advertised one of the Zebu under the tropics within more 40 weeks stated in many knowledge ( Rahman et al., 2016 ; Tellah et al., 2015a , 2015b ; Bashir and you may El Zubeir, 2013 ; Sokouri ainsi que al., 2010 ; Bayemi ainsi que al., 2005 ). , 2015 ). Particular experts has said overall performance most alongside our very own observance into the some other crossbreeds when you look at the Africa, regardless of cow breeds used in the brand new check out: 34 months one of the Montbeliard crossbreeds from inside the Algeria ( Madani and you can Mouffok, 2008 ) and you may Morocco ( Srairi and you can Mousili, 2014 ), ± 0.43 days throughout the Girolando hybrid from inside the Benin ( Doko mais aussi al., 2012 ). It was a similar towards Holstein-Friesian crossbreed cattle during the Ethiopia on thirty-six.cuatro ± step one.7 days, this new Borgou and you will Lagunaire types from the 36.step 1 ± six.31 months within the Benin ( Adamou-Ndiaye et al., 2003 ) plus in the Azawak Zebu on 36.5 ± 4.ten and you will ± thirteen weeks in the Niger ( Achard and you can Chanono, 2006 , 1997 ).
All of our observance was higher than those people claimed from the Genzebu mais aussi al. (2016) one of hybrid cattle inside Kenya (twenty six.nine ± 5.4 and you may twenty-seven.0 ± step three.seven weeks). It actually was a bit a lot better than the fresh new findings of the Ngodigha mais aussi al. (2009) from 30.eight ± dos.5 months among crossbreeds (Holstein x Bunadji) for the Nigeria, Ben Salem ainsi que al. (2009) from 29.seven ± cuatro.one year inside the Holstein from inside the Tunisia and Srairi and Mousili (2014) out of 29 days in the Montbeliard in the Morocco.
Among the https://datingranking.net/elite-dating/ many some other crossbreeding systems known ( Dining table step 1 ), the fresh Fulani Zebu (FZ) inseminated having sperm regarding Montbeliard (MB x FZ) and you can Alps Brown (Ab x FZ) have delivered more precocious corssbreeds (earliest calving at couple of years) (5%). If you’re, the fresh inseminations from Fulani Zebu cattle into the sperm out-of Holstein (HT x FZ) and you can out of Tarentaise (T x FZ) then the insemination away from Gudali Zebu cows that have semen out of Montbeliard (MB x GZ) have introduced the new precocious hybrid cattle.
Specific adaptation points of the AFC were assessed to reach the statements
Desk step one: Decades to start with calving (months) based on crossbreeding enter in whole milk cows facilities in your community out-of Bobo-Dioulasso in the Burkina Faso
So you’re able to greatest comprehend the effect of the fresh new crossbreeding to the intimate precocity out of hybrid pets, the newest AFC try assessed based on: crossbreed kind of, race off sire moms and dads (bull and you can inseminated local cattle), hybridization top and you may inventory facilities
The study concerned about the fresh new reproduction track of twenty (20) crossbreed cows resulting from this new interbreeding from the phony insemination anywhere between local reproduce cows (Gudali Zebu and Fulani Zebu) and you can unique breed bulls (Holstein, Alps Brownish, Tarentaise, Montbeliard). This type of crossbreeds was indeed created between 1999 and you will 2010 and gave the first calf anywhere between 2002 and you may 2012 to your about three enhanced inventory farms in urban and you may residential district areas of Bobo-Dioulasso. Each of these farms have on fifty crossbreed cows into the creation. The initial ranch is found in an urban area, another ten Kilometres aside at southern area hop out and third sixty Kilometer away within eastern get off out-of Bobo-Dioulasso. Initial studies ranging from within these areas aided to choose such three farms having a livestock sign in (heat and you will phony insemination keeping track of sheet sets). Occurrences pertaining to individual track of animal reproduction for example calving schedules, times of first heating and you will inseminations was indeed submitted each and every day of the this new cattlemen and inseminators. The new exploitation of those data files caused it to be you can easily to choose twenty (20) very first calving’s corresponding to the first services. This type of farms was characterized by the existence of destroyed, a great herd health monitoring, a guided breeding mode (mainly AI, to possess diminished a designated bull), the fresh concentrate supplies (cotton pie otherwise cottonseed and you may commercial malt) throughout the ration giving and you may intense shipments out-of silage and you can farming because of the points. Really the only intent behind that it operation method of ‘s the creation and you may marketing away from by hand processed milk products, twice a day (day and you may evening). The latest centers are served toward animals to their come back out-of grazing and in the brand new early morning from the milking date.